Display screen of a navigation device for a vehicle with a graphical user interface



The sole FIGURE is a front view of a display screen of a navigation device for a vehicle with a graphical user interface showing our new design.

The broken lines showing a display screen and various text, icons, and elements of the graphical user interface illustrate portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for a display screen of a navigation device for a vehicle with a graphical user interface, as shown and described. 